Bleu de France (#318CE7)

The hex code for Bleu de France is #318CE7. It is rgb(49, 140, 231) in RGB, hsl(210, 79%, 55%) in HSL, and about cmyk(79%, 39%, 0%, 9%) in CMYK — a mid-tone blue. Black text is the more readable choice on this background.

#318CE7

HEX#318CE7

RGBrgb(49, 140, 231)

HSLhsl(210, 79%, 55%)

HSVhsv(210, 79%, 91%)

CMYKcmyk(79%, 39%, 0%, 9%)

OKLCHoklch(63.2% 0.161 252)

LABlab(56.41% -2.62 -54.65)

LCHlch(56.41% 54.71 267.25)

Colors Closest to Bleu de France

Bleu de France is a registered color name. These are the named colors nearest to it, measured as CIE76 distance in CIELAB — a perceptual scale, so the ordering matches what the eye sees rather than how close the raw RGB numbers happen to sit.

United Nations Blue#5B92E5ΔE 7.73 Microsoft Edge Blue#0078D7ΔE 8.41 Cornflower Blue#6495EDΔE 8.67 True Blue#0073CFΔE 9.87 Bright Navy Blue#1974D2ΔE 9.89 Dodger Blue#1E90FFΔE 10.9

Browse the full index of named colors A-Z or every blue in the library.

#318CE7 Channel Values

How Bleu de France breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 49 · G 140 · B 231	8-bit channels as sent to the display
HSL	H 210° · S 79% · L 55%	Easiest model for building lighter and darker variants
HSV	H 210° · S 79% · V 91%	Matches the picker in most design tools
CMYK	C 79% · M 39% · Y 0% · K 9%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.48:1 vs white · 6.04:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Bleu de France background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text3.48:1AA normal ✗AA large ✓AAA normal ✗

TextBlack text6.04:1AA normal ✓AA large ✓AAA normal ✗

Need a specific ratio against another background? Open #318CE7 in the contrast checker.

Colors That Go With Bleu de France

Pairings derived from color-wheel relationships. The complementary color sits opposite Bleu de France; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of Bleu de France

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #318CE7.

How Bleu de France Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#318CE7

Protanopia#8282E7

Protanomaly#6B86E7

Deuteranopia#7777E8

Deuteranomaly#6380E7

Tritanopia#009B9B

Tritanomaly#0096BE

Achromatopsia#898989

Test a full palette in the color blindness simulator.

Using #318CE7 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--bleu-de-france: #318CE7;

CSS backgroundbackground-color: #318CE7;

Tailwind configcolors: { 'bleu-de-france': '#318CE7' }

SwiftUIColor(red: 0.192, green: 0.549, blue: 0.906)

Android XML<color name="bleu_de_france">#318CE7</color>

SVG fillfill="#318CE7"

More Blue Colors

Bleu de France sits in the bluefamily. These are its neighbours across that family's full range, each with its own breakdown.

324ab2 314158 32527b 312c85 3300ff 2e5894 333366 2e5090 333399 2e2d88 3333cc 2d14b8 4169e1 5757ff 6d9bc3 88a6cd a3b3ff c4b4ff e2e9f3 000052 003366 020618 113c8d 1e2939

#318CE7 Frequently Asked Questions

What is the hex code for Bleu de France?

The hex code for Bleu de France is #318CE7. That is rgb(49, 140, 231) in RGB, hsl(210, 79%, 55%) in HSL, and approximately cmyk(79%, 39%, 0%, 9%) in CMYK.

What is the RGB value of #318CE7?

#318CE7 is rgb(49, 140, 231) — red 49, green 140, and blue 231 on the 0-255 scale.

What is the CMYK value of #318CE7?

#318CE7 converts to approximately cmyk(79%, 39%, 0%, 9%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #318CE7 be black or white?

Black text is the more readable choice. #318CE7 scores 3.48:1 against white and 6.04:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #318CE7 as a CSS color keyword?

No. #318CE7 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is cornflowerblue (#6495ED) at a CIE76 distance of 8.67, which is clearly related but distinguishable side by side.

Open Bleu de France in a Tool

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Keep exploring: every blue in the color library, the guide to shades of blue, or the full color library.